Hi Pino, you mentioned in the article that Dynamo was built in response to an internal demand. Can you talk at all about the specifics of what sort of information Amazon puts in there?

I've overseen a few big Dynamo installations at this point, but for the most part I wouldn't store any "core" information in there (say like a customer, merchant, or product at Amazon) because after adding data to Dynamo, your ability to query and restructure it is quite limited. We've generally put data in that's append-only, is considerable in volume, and which we only ever need to retrieve in a few particular ways. To go back to the Amazon example, I probably wouldn't put a customer, merchant, or product in it, but I might put in a log entry for a purchase transaction.

What I'm trying to suss out is whether the sweet spot product like Citus is more akin to a Dynamo, or more akin to a traditional RDMS.